A search is under way in Joshua Tree National Park for a California man who never returned from a hike into the hills near the park's Black Rock Campground.

Edward H. Rosenthal, 64, of Culver City, has been missing since Friday night. His disappearance was reported to park officials Sunday afternoon.

Search activities have focused in the wilderness area just south of the campground. Ground teams have been aided by a crew aboard a San Bernardino County Sheriff’s Office helicopter.

According to a park release, Mr. Rosenthal parked at Black Rock Campground where he communicated to other campers his intentions to go out for a solo day-hike on Friday afternoon. Based on information provided by the man's family, it is believed that he is an experienced hiker and is in good physical condition.

The terrain in the search area is characterized by steep, rocky ridges cut by canyons and dry streambeds, a park release said. The general elevation is 4,000-5,500 feet. There are few natural water sources. Some shade can be found beneath scattered trees and rocks.

Recent weather at Black Rock Canyon has been sunny and hot with daytime temperatures in the mid- to upper-90s.

Mr. Rosenthal is described as a Caucasian male, 5-foot-7-inches in height, weighing 145 pounds, with short brown hair and brown eyes. He was wearing eyeglasses, a tan shirt, tan pants, and a tan wide-brim hat with a tail for sun protection. He was carrying a black camelback-style backpack.

Anyone traveling in the area who might have seen Edward Rosenthal or someone matching his description are asked to call the Federal Interagency Communications Center (FICC) at 909-383-5668.